Large Eddy Simulation (LES)

Mr-CFD offers a complete range of CFD analysis, consulting services and training in Large Eddy simulation (LES)

Large Eddy Simulation (LES)les vs rans

In most industrial application, fluid flow is turbulent and in the other word, flow velocity magnitude and direction fluctuate during the time. There are three models for investigating turbulence effects. Direct numerical simulation (DNS) in DNS no modeling required. DNS solving is not practical for simulating industrial work that Reynolds number is very high. The computational cost of DNS is related to cube of Reynolds number. The computational cost of this model is very high and is not proposed for industrial work. Needs high number of element and consequence high-performance CPU (HPC) and RAM.in application that detail of fluid flow and eddies is important we must use DNS. Another method is Reynolds Average Naiver Stokes (RANS). By using this method we just find effect of turbulence and eddies, in the other word we will find the Reynolds stress magnitude and turbulence viscous. The computational cost of this model is lower than DNS and can be simulated in steady state. There is another model that can be solved in some industrial work that we should know more about eddies and vortexes. This model is used for finding large eddies behavior. We know that most of passive scalar and mass and momentum are transferred by large eddies. Large eddies behavior is more related to special problem and geometry and boundary condition related to especial work but small eddies behavior is more universal. So we can simulate small eddies by various models such as RANS model (k-epsilon, k-omega and so on).rans les dns

When we simulate the LES model we should use transient model and also finer mesh compare to RANS models such as K-omega and k-epsilon. Also we should use smaller size of mesh and consequently number of mesh is higher. So total computational cost is high and we need high-performance computer. But computational cost of this model is lower than DNS.

We are expert in simulate problems that LES should be used as a turbulence model. Since the computational cost of this model is very high so total time of our contract for this project is higher than RANS model, sometime about 100 times of RANS works. in the following you can find a summary of our work related to LES.les

  • Vortex shedding around circle barrier
  • Fluid solid interaction of tailed circle
  • Simulation of fluid flow around various barrier shape (triangular, square, etc.)

 

Mr CFD Company services

Due to the wide range of mechanical science and the different fields of work as well as the abundance of projects, this company offers to view all the products presented in this section. In the absence of any desired project or project close to your request, you can search our portfolios in order to find your eligible project, after all, if you didn’t find any ideal project you can order your rans lesproject from the services pages on the header of this website. Your order will be reviewed by our experts in the shortest possible time, and if we need more information about the proposed project, we will be in touch with you. After completing the required information to examine the proposed project, and confirming your request, the time, conditions and costs will be sent to you during the contract. This process will take place as soon as possible. If you have any question, you can contact to our online support section (the fixed blue tab below the page). If it is offline, don’t worry, you can post your message, and it will be answered as soon as possible.

Portfolios

These are our latest successful projects.

Cavitation Simulation In Francis Turbine By ANSYS Fluent
Cavitation Simulation in Francis Turbine by ANSYS Fluent
Free Surface Flows (Multiphase), Mechanical, Renewable, Turbomachinery

Cavitation Simulation in Francis Turbine by ANSYS Fluent

Cavitation simulation in Francis turbine by ANSYS Fluent One of the most prevalent applications of fluid mechanics is Turbomachinery designing.…

Combustion Chamber In The Gas Turbine Engine By ANSYS Fluent
Combustion chamber in the gas turbine engine by ANSYS Fluent
Combustion, Heat Transfer, Mechanical, Reacting Flows and Combustion, Single-Phase, Non-Reacting Flows

Combustion chamber in the gas turbine engine by ANSYS Fluent

CFD Simulation of the combustion chamber in the gas turbine engine by the ANSYS Fluent software Over the past twenty…

Air Conditioning CFD Simulation Of The Surgery Room
Air conditioning CFD simulation of the surgery room
Heat Transfer, Mechanical, Single-Phase, Non-Reacting Flows

Air conditioning CFD simulation of the surgery room

Air conditioning CFD simulation of the surgery room using the ANSYS Fluent software One of the most important hazards in…

3-blade Horizontal Axis Wind Turbine (HAWT)-CFD Simulation
3-blade horizontal axis wind turbine (HAWT)-CFD simulation
Aerospace, Mechanical, Single-Phase, Non-Reacting Flows

3-blade horizontal axis wind turbine (HAWT)-CFD simulation

3-blade horizontal axis wind turbine (HAWT) CFD simulation by ANSYS Fluent software Wind turbines generally convert wind energy into electrical…

Real Porous Media CFD Simulation By ANSYS Fluent Software
Real porous media CFD simulation by ANSYS Fluent software
Heat Transfer, Mechanical, Single-Phase, Non-Reacting Flows

Real porous media CFD simulation by ANSYS Fluent software

Real porous media CFD simulation by ANSYS Fluent software Study of fluid flow in porous media is one of the…

CFD Simulation Of A Real Unmanned Aerial Vehicle (UAV-Aircraft)
CFD simulation of a real Unmanned Aerial Vehicle (UAV-Aircraft)
Aerospace, Mechanical, Single-Phase, Non-Reacting Flows

CFD simulation of a real Unmanned Aerial Vehicle (UAV-Aircraft)

CFD simulation of a real Unmanned Aerial Vehicle (UAV-Aircraft) using ANSYS Fluent software Drones can be considered as small non-pilot…

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If you want to know what we will do with your project read our steps blow.

STEP 1

Please send the details of your project through the link below.

STEP 2

Our colleagues will call you as soon as possible; then after advising you on your project, we will specify the steps of the project in detail, the fee and the delivery time for each step.

STEP 3

After paying the deposit, we will start your project and the results of each step will be sent to you in the specified deadlines. Once you have investigated your results and confirmed it, the fee of that step should be paid.

STEP 4

All of the results and files related to simulations will be sent to you and you will receive the required training.

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